CN101349619A - Device for use at temperatures above 1000 DEG C or in molten steel and use of the device - Google Patents

Device for use at temperatures above 1000 DEG C or in molten steel and use of the device Download PDF

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Publication number
CN101349619A
CN101349619A CNA2008101307685A CN200810130768A CN101349619A CN 101349619 A CN101349619 A CN 101349619A CN A2008101307685 A CNA2008101307685 A CN A2008101307685A CN 200810130768 A CN200810130768 A CN 200810130768A CN 101349619 A CN101349619 A CN 101349619A
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CN
China
Prior art keywords
weight
cement
sand
molten steel
described device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2008101307685A
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Chinese (zh)
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CN101349619B (en
Inventor
J·克内费尔斯
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Heraeus Electro Nite International NV
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Heraeus Electro Nite International NV
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Publication of CN101349619A publication Critical patent/CN101349619A/en
Application granted granted Critical
Publication of CN101349619B publication Critical patent/CN101349619B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/12—Dippers; Dredgers
    • G01N1/125—Dippers; Dredgers adapted for sampling molten metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Hydrology & Water Resources (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Mold Materials And Core Materials (AREA)
  • Ceramic Products (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Glass Compositions (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention relates to an apparatus used in molten steel or above 1000 DEG C, comprising a main body with grit and/or high temperature tolerant hollow sphere and/or high temperature tolerant hollow fiber as main gradient, characterized in that the main body comprises water-containing glass and cement. The invention further provides uses of the apparatus as a sampler of molten steel and/or a measurement device, and uses in molten steel with carbon content lower than 100ppm. Moreover, the invention provides method for producing the apparatus by core ejection process.

Description

Be suitable at temperature more than 1000 ℃ or device of in molten steel, using and uses thereof
Technical field
The present invention relates to a kind of being suitable at temperature more than 1000 ℃ or the device that uses in molten steel, wherein this device has the body that principal ingredient is sand and/or high temperature resistant hollow ball and/or high temperature resistant hollow fiber.
Background technology
According to GB 782205, known hollow core from foundry engieering, this hollow core also has the potpourri of organic material to form by sand and water glass binder.
Such device can be used as the body that is used for measuring head, those disclosed in DE 10 2004022 763B3.
Similarly device also can be known from DE10 2,005 060 493B3.
Known devices has bonding agent, and the major part in the bonding agent is organic material, and in manufacture process, organic material can discharge the gas that contains phenol or contain ammonia.
Summary of the invention
The purpose of this invention is to provide a kind of modifying device that is used for high temperature or is used for molten steel, compare with known devices, device of the present invention is improving to some extent aspect environment and health affected.
Purpose of the present invention realizes by following technical proposals.According to the present invention, providing a kind of is suitable at temperature more than 1000 ℃ or the device that uses in molten steel, this device has body, this body is that principal ingredient forms with sand and/or resistant to elevated temperatures hollow ball and/or resistant to elevated temperatures hollow fiber, and this body comprises water glass and (inorganic) cement.
Here, heat-resisting quantity is interpreted as mechanical resistance and the chemical resistance under about 1000 ℃ to 1700 ℃ temperature, continues at least 5 seconds (being used for for example sampling required time) under 1700 ℃ temperature, and, under 1000 ℃ of temperature, last up to 5 minutes.It is shocking, demonstrated this body long-term storage of the present invention and also kept stable mechanical performance, compare that prior art uses not resiniferous bonding agent can not obtain storing and keeping the body of stable mechanical performance with the present invention.Demonstrate: not only stable when storing according to body of the present invention, and in use subsequently, also show enough stability.During according to body of the present invention, body of the present invention can not give out environment or healthy harmful material yet in actual production.These materials are processed into formed body easily.In addition, demonstrate: uncomplicated when being used as the sample chamber thereby on the one hand certain stable mechanical performance can be guaranteed to take a sample according to device of the present invention, but then, can easily destroy this body, to take out sample from body interior by external action through selecting.Do not having under the situation of servicing unit, utilizing ceramic body (for example) can not obtain above-mentioned effect.In addition, demonstrate: it is extremely low that sample is subjected to the influence of its carbon content.So, be suitable as sampler and/or measurement mechanism surprisingly according to device of the present invention, be used for molten steel especially carbon content be lower than the molten steel of 100ppm.Demonstrate: can be very reliably and produce body enduringly according to device of the present invention by the core shooting method.
Preferably, body contains high-alumina cement, especially is selected from the cement of the group that comprises aluminous cement, Portland cement (portland cement) and phosphate cement.Portland cement also is called blast-furnace cement.As reaction promoter, can comprise on a small quantity lithium carbonate, lime chloride, sodium chloride or the gypsum of (preferred total amount mostly is 1 weight % most) according to the body of device of the present invention.
Adhesiving reinforcing agent as additional can use flyash and/or silicic acid, and especially, ratio mostly is 10 weight % most.In addition, advantageously, can comprise separating agent, be used to make body to be easy to take off from process units.Preferably, the ratio of separating agent (for example, teflon or oils) mostly is 0.5 weight % most.
Advantageously, the water glass proportion is 5 weight %-15 weight %, and the cement proportion is 10 weight %-20 weight %.Advantageously, sand, hollow ball and/or hollow fiber proportion mostly are 75 weight % most.Especially, sand can be so-called foundry sand or molding sand.Preferably, granularity is preferably 200 μ m-300 μ m between 90 μ m and 700 μ m.
Hollow ball and/or hollow fiber form more favourable by aluminium oxide or alumina silicate.Sand, hollow ball and/or hollow fiber proportion are preferably 55 weight %-75 weight %, and preferred ratio is 60 weight %-70 weight %.
Must use under the situation of so-called not spattering property material, body of the present invention can be advantageously used in the device that immerses molten steel, to keep lower to the influence of surrounding environment.
Device provided by the invention can be used as the sampler and/or the measurement mechanism of molten steel, and can be used on carbon content and be lower than in the molten steel of 100ppm.In addition, the present invention also provides the method by core shooting method production aforementioned means.
Embodiment
Embodiments of the present invention are described below.
According to device of the present invention, for example, can be as constructing among DE 10 2,004 022 763B3 or described in DE 10 2,005 060 493B3.Also can adopt other structure.Device described in DE 10 2,005 060 493B3 both had been suitable for measuring in motlten metal (especially molten steel or slag), also was suitable for taking a sample.
According to a kind of embodiment, can comprise according to the body of device of the present invention:
The foundry sand of 65 weight %
The Portland cement of 15 weight %
The silicic acid of 10 weight %
The natrium brine glass of 9 weight %
0.7 the lime chloride of weight %
0.3 the separating agent of weight %.
According to another kind of embodiment, can comprise according to body of the present invention:
The molding sand of 75 weight %
The high-alumina cement of 10 weight %
The potassium silicate of 14 weight % (water glass)
0.6 the sodium chloride of weight %
0.4 the separating agent of weight %.
Body according to the device of another embodiment of the present invention has following ingredients:
The hollow ball or the hollow fiber that form by aluminium oxide or alumina silicate of 70 weight %
The phosphate cement of 20 weight %
9 weight % natrium brine glass
0.5 weight % gypsum
0.5 weight % separating agent.
As separating agent, can use for example teflon.

Claims (14)

1. one kind is suitable at temperature more than 1000 ℃ or the device that uses in molten steel, wherein said device has the body that principal ingredient is sand and/or high temperature resistant hollow ball and/or high temperature resistant hollow fiber, it is characterized in that: described body comprises water glass and cement.
2. device according to claim 1 is characterized in that described body comprises high-alumina cement, especially is selected from the cement of the group that comprises aluminous cement, Portland cement and phosphate cement.
3. according to claim 1 or the described device of claim 2, it is characterized in that: described body comprises lithium carbonate and/or lime chloride and/or sodium chloride and/or gypsum.
4. according to claim 1 described device of each claim to the claim 3, it is characterized in that: described body comprises flyash and/or silicic acid and/or separating agent.
5. according to claim 1 described device of each claim to the claim 4, it is characterized in that: the water glass proportion is 5 weight %-15 weight %, and the cement proportion is 10 weight %-20 weight %.
6. according to claim 1 described device of each claim to the claim 5, it is characterized in that: sand and/or hollow ball and/or hollow fiber proportion summation mostly are 75 weight % most, are in particular 60 weight %-70 weight %.
7. device according to claim 3 is characterized in that: lithium carbonate and/or lime chloride and/or sodium chloride and/or gypsum proportion summation mostly are 1 weight % most.
8. device according to claim 4 is characterized in that: described body comprises the flyash of maximum 10 weight % and/or the separating agent of silicic acid and/or maximum 0.5 weight %.
9. according to claim 1 described device of each claim to the claim 8, it is characterized in that: described sand is foundry sand or molding sand.
10. according to claim 1 described device of each claim to the claim 9, it is characterized in that: the granularity of described sand is 90 μ m to 700 μ m, is in particular 200 μ m to 300 μ m.
11. according to claim 1 described device of each claim to the claim 8, it is characterized in that: described hollow ball or hollow fiber are that principal ingredient forms with aluminium oxide or alumina silicate.
12. according to claim 1 to the claim 11 the described device of each claim as the sampler of molten steel and/or the purposes of measurement mechanism.
13. be lower than purposes in the molten steel of 100ppm in carbon content according to claim 1 described device of each claim to the claim 11.
14. produce method according to claim 1 described device of each claim to the claim 11 by the core shooting method.
CN2008101307685A 2007-07-17 2008-07-17 Use of the device for use at temperatures above 1000 DEG C or in molten steel Expired - Fee Related CN101349619B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007033622.7 2007-07-17
DE200710033622 DE102007033622B4 (en) 2007-07-17 2007-07-17 Use of a high temperature resistant device in molten steel

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Publication Number Publication Date
CN101349619A true CN101349619A (en) 2009-01-21
CN101349619B CN101349619B (en) 2013-04-24

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US (2) US20090020253A1 (en)
EP (1) EP2045552A3 (en)
CN (1) CN101349619B (en)
BR (1) BRPI0803725A2 (en)
CL (1) CL2008002079A1 (en)
DE (1) DE102007033622B4 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104865366A (en) * 2015-06-01 2015-08-26 李理 Telescopic detector for detecting carbon content of high-temperature molten iron in steel furnace
CN104968451A (en) * 2013-01-29 2015-10-07 通用电气公司 Calcium hexaluminate-containing mold and facecoat compositions and methods for casting titanium and titanium aluminide alloys
CN106442001A (en) * 2015-08-12 2017-02-22 贺利氏电子耐特国际股份公司 Slag cap

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US9061350B2 (en) * 2013-09-18 2015-06-23 General Electric Company Ceramic core compositions, methods for making cores, methods for casting hollow titanium-containing articles, and hollow titanium-containing articles
US9511417B2 (en) 2013-11-26 2016-12-06 General Electric Company Silicon carbide-containing mold and facecoat compositions and methods for casting titanium and titanium aluminide alloys
DE102016112039B4 (en) 2016-06-30 2019-07-11 Refratechnik Holding Gmbh Heat-insulating plate, in particular cover plate for molten metal, and method for producing the plate and its use

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CN104968451A (en) * 2013-01-29 2015-10-07 通用电气公司 Calcium hexaluminate-containing mold and facecoat compositions and methods for casting titanium and titanium aluminide alloys
US9592548B2 (en) 2013-01-29 2017-03-14 General Electric Company Calcium hexaluminate-containing mold and facecoat compositions and methods for casting titanium and titanium aluminide alloys
CN104865366A (en) * 2015-06-01 2015-08-26 李理 Telescopic detector for detecting carbon content of high-temperature molten iron in steel furnace
CN106442001A (en) * 2015-08-12 2017-02-22 贺利氏电子耐特国际股份公司 Slag cap

Also Published As

Publication number Publication date
DE102007033622B4 (en) 2010-04-08
EP2045552A3 (en) 2011-08-17
CL2008002079A1 (en) 2010-02-12
CN101349619B (en) 2013-04-24
EP2045552A2 (en) 2009-04-08
US20110192324A1 (en) 2011-08-11
DE102007033622A1 (en) 2009-01-22
BRPI0803725A2 (en) 2009-04-22
US20090020253A1 (en) 2009-01-22

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